And john harris



UNITED STATES PATENT OFFICE.

JAMES R. ROSE, 0F EDGEWORTE, PENNSYLVANIA, AND JOHN HARRIS, 01E LAKEWOOD, OHIO, ASSIGNORS TO CARBO-OXYGEN COMPANY, OF PITTSBURGH, PENNSYLVANIA,

A CORPORATION or DELAWARE.

GASEOUS FUEL.

No Drawing.

T 0 all whom it may concern:

Be it known that we, (1) JAMES R. Rosa, (2) JOHN HARRIS, citizens of the United States,residing at (l) Edgeworth, (2) Lakewood, in the county of (1) Allegheny, (2) Cuyahoga, and State of (1) Pennsylvania, (2) Ohio, have invented a certain new and useful Improvement in Gaseous Fuel, .of which the following is a full, clear, and exact description.

This invention relates to gaseous fuel which is particularly useful for the purpose of producing a concentrated flame having a high flame'temperature and capable of doing extremely fine work in the cutting of metals.

-A flame of this character is requisite for use in blowpipes with c'arbographs and for the cutting of steel such as is used in die work and for the trimming of the edges of armor plate as at present constituted.

' We obtain a gas having the above desirable characteristics by mixing with hydrogen, as a combustible base, methane and carbon monoxide in the proportions of from 2%% to 12%% by volume each of suchmethane and-carbon monoxide to the hydrogen constituent. The carbon monoxide serves to increase slightly the temperature produced by the combustion of hydrogen alone. Furthermore, the gaseous mixture roduces within the burning hydrogen a-visible cone which enables the operator to adjust the proportions of the gases and the combustionsupporting oxygen as may be necessary and to apply the flame in the most advantageous manner to the work. Both the volume of the flame and the heat units produced by the combustion of the mixture are greater than are produced by the combustion of hydrogen alone; and, as pointed out, the gaseous mixture is particularly well adapted for the cutting of metal with a minimum of slagging Specification of Letters Patent.

Patented Jan. 24, 1922.

Application filed December 26, 1919. Serial No. 347,460.

and with an extremely narrow slot, which results in the fineness of cutting referred to hereinbefore.

According to Richards on Metallurgical Calculations, published in 1908, the flame temperature produced by the combustion of the aforesaid gases will be about 3200 C., and the variations in the percentages of the said gases will cause approximately the following variations in the net B. T. U, per cubic foot ofmixture and in the cubic feet of oxygen required for the combustion of a cubic foot of such mixture.

No. 1 mixture, 95% H. with 2%% each of methane and carbon monoxide; net B. T. U.s 310; cu. ft. of oxygen .550.

No. 2 mixture, 75% H. with 12? each of methane and carbon monoxide; net B. T. U.s 480; cu. ft. of oxygen .7 50.

Having thus described our invention, what we claim is:

1. 'A gas for cutting, welding and heating purposes consisting of a mixture of methane and carbon monoxide with hydrogen in the proportions of'from2 to 12%% by volume each of methane and carbon monoxide to hydrogen.

2. A gas for cutting, welding and heating purposes consisting. of a mixture of methane and carbon monoxide with hydrogen in proportions not substantially less than 5% by volume'of such combined gases to the hydrogen and not materially more than 25% of such combined gases to the hydrogen, the methane and carbon monoxide being present in the proportions of at least 24 each in such mixture.

In testimony whereof, we hereunto affix our signatures. 

